Currently Being ModeratedFeb 28, 2012 11:47 AM (in response to AJ.A)
What iTunes is doing is "normalizing" the playback, so differences in volume levels are minimized on playback. This is a good thing!
It does not affect the original file, so burning of CDs is not affected. The original track files are not modified.
You can turn this Off in Preferences/Settings> Playback> Sound Check.
Currently Being ModeratedFeb 28, 2012 4:36 PM (in response to AJ.A)
From the same link that Limnos provided:
"If you turn Sound Check off, the Sound Check data stored for each song is ignored, but not removed from the iTunes Music Library or the ID3 tags."
I.e., if it's off, then iTunes doesn't change volume playback at all. Since the original file's volume is also not changed, you have no issues left to deal with.
Currently Being ModeratedFeb 28, 2012 7:48 PM (in response to AJ.A)
Check all Sound Check settings including all iPods and burn settings. Once enabled in iTunes it enables it in other places as well. Burn settings is a good example. Right click a playlist choosing "Burn playlist to disk", if Sound Check is checked un-check it and click the Burn button. Do not put in a blank CD but click the small "x" in the iTunes display at the top beside "Please insert a blank disk...". It will cancel the burn but make the changes take effect.
Currently Being ModeratedFeb 29, 2012 11:15 AM (in response to Stephen Spark)
Thank you, for some reason I must have accidently enabled sound check for burning a cd instead of "include cd text" (the box below it)
Disabling it on the burn cd opition removed the volume tag on the songs (or at least stop showing it)